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Which of the following is not an operating system?

CP / M

Unix

Pascal

MS DOS

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Which windows features can be accessed from the start menu?

Help

Windows Explorer

Microsoft Network

All of above

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A character that represents one or more unknown character is

Wildcard character

All file name

Extensions

None of above

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The instruction register

is a hardware memory device which denotes the location of the current instruction being executed.

is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.

contains the address of the memory location that is to be read from or stored into.

contains a copy of the designated memory location specified by the MAR after a "read" or the new contents of the memory prior to a "write".

None of the above

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Fragmentation of the file system

occurs only if the file system is used improperly

can always be prevented

can be temporarily removed by compaction

is a characteristic of all file systems

None of the above

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Which is the layer of a computer system between the hardware and the user program

Operating environment

Operating system

System environment

None

Discussion

Banking

Engineering

General

Medical

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History and Generations

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Input Devices

Output Devices

Computer Memory

Digital Logic Gate

Number System

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Disk Operating System (DOS)

Database Systems

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